//第二层循环内通过CSDN完善
public class Program9 {
    public static void main(String[] args) {
        for (int i = 1;i <= 1000;i++){
            int sum = 0;
            for (int j = 1;j < i;j++){
                if (i % j == 0){sum += j;}
            }
            if (sum == i){
                System.out.println(i);
            }
        }
    }
}